Felix Walken (フェリックス・ウォーケン Ferikkusu Wōken), formerly known as Rail Tracer (レールトレーサー Rērutorēsā), introduced as Young Conductor and born Claire Stanfield (クレア・スタンフィールド Kurea Sutanfīrudo) is the legendary freelance assassin Vino (ヴィーノ Vīno), and considered to be one of the best in the profession. He will be referred to as Claire throughout the article, since that is how he is most commonly known.